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Finding the Fourth Proportional to 93,386.31, 128,914.85 and 63,263.11

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Solution

The fourth proportional to 93,386.31, 128,914.85 and 63,263.11 is: 87,331.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,386.31 : 128,914.85 = 63,263.11 : x
  2. Step 2: Convert to fraction form
    93,386.31/128,914.85 = 63,263.11/x
  3. Step 3: Cross multiply
    93,386.31x = 128,914.85 × 63,263.11
  4. Step 4: Simplify right side
    93,386.31x = 8,155,554,336.18
  5. Step 5: Solve for x
    x = 8,155,554,336.18/93,386.31
  6. Step 6: Final answer
    x = 87,331.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.